Shutter, polarized and two colour glasses are all old school. They have all been around since I was a kid in the 70s, and some of them since the 50s.
I personally am not going to go out and replace my 1 year old 46" LCD TV just to get 3D. Especially if it requires using archaic glasses. For me, 3d has to be glasses free or I'm just not interested (at least for a big screen TV). I don't like being bothered by the glasses frames while I'm watching a movie or sporting event. I feel bad for people who are stuck wearing glasses all the time.
3D is just a way for the manufacturers to keep the prices of TVs high. They can't find any way to make them better enough to justify the high prices on new models, so now they're adding gimmicks to keep the prices up. You can now find brand name TVs for generic TV prices, so they have to do something.
No more new TVs for me until OLED and glassesless 3D.